An unusual key, which Mike has kept in a secret box, is stolen from the B&B, putting Mike Woo back on the case of a theft he had investigated in San Francisco four years ago. Mike and Shelby head to San Francisco and learn about each other and their individual methods of investigating a crime.

An outbreak of vandalism in Cocoa Beach leads Detective Hineline to suspect Cindi's cousin, Keith, of the crimes. Shelby is caught between her friendship with Keith and the fact that all the evidence points to him.

A string of arson fires covers up the disappearance of some endangered animals. If Shelby can relieve herself of her duties as ""Pearl the Safety Squirrel"" long enough to solve the mystery of the fires, she may be able to convince Hineline she's ready to be a real investigator.

Noah is kidnapped when he is mistaken for Leo, the son of a research scientist. Faced with the possibility of losing their friend, Shelby and Cindi convince everyone that Leo is really Noah while trying to find clues to track down the kidnappers.

As a hurricane blows into Cocoa Beach, Shelby finds herself responsible for the safety of the guests of the B&B and in charge of investigating the disappearance of a valuable watch. Shelby and Noah are soon at odds, when they discover that one potential suspect is Melanie, a girl Noah has a crush on.

The ""Reddy Eddy"" chain of convenience stores are being filled with a gas that temporarily knocks out the store's employees. When they wake up, nothing is stolen! Is it revenge or just a prank? Unfortunately, Shelby has a crush on the son of one of the main suspects.